CN101874175B - Two-element tandem flexible joint - Google Patents
Two-element tandem flexible joint Download PDFInfo
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- CN101874175B CN101874175B CN2009801011087A CN200980101108A CN101874175B CN 101874175 B CN101874175 B CN 101874175B CN 2009801011087 A CN2009801011087 A CN 2009801011087A CN 200980101108 A CN200980101108 A CN 200980101108A CN 101874175 B CN101874175 B CN 101874175B
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- elastic material
- flexible element
- annular elastic
- material flexible
- frame
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 44
- 239000013013 elastic material Substances 0.000 claims description 143
- 239000012530 fluid Substances 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 33
- 238000003466 welding Methods 0.000 claims description 4
- 244000287680 Garcinia dulcis Species 0.000 claims 3
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 24
- 238000000034 method Methods 0.000 description 16
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- 238000007667 floating Methods 0.000 description 11
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 9
- 238000007789 sealing Methods 0.000 description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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- 229930195733 hydrocarbon Natural products 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
- F16L27/103—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations in which a flexible element, e.g. a rubber-metal laminate, which undergoes constraints consisting of shear and flexure, is sandwiched between partly curved surfaces
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/08—Casing joints
- E21B17/085—Riser connections
Abstract
A flexible joint (27) has an extension (54) mounted to a housing (51,52) for relative angular displacement. Two or more annular elastomeric flex elements (61,62) are stacked in a co-axial fashion and joined mechanically to mount the extension (54) to the housing (51,52) so that the flex elements react in parallel to angular and axial displacements of the extension with respect to the housing so that tensile load upon the extension (54) places each of the flex elements (61,62) in compression to split and share the tensile load among the flex elements in proportion to their relative axial stiffnesses. Therefore, for a given housing size or footprint, the overall load capacity is increased, and the lifetime of the flexible joint is increased for a given load capacity. The flex elements may have a common center of rotation, and the flex elements may be disposed either on the same side of the center of rotation or on opposite sides.
Description
Technical field
The present invention relates to a kind of flexible joint, it has extension part and a plurality of annular elastic material flexible element that extends from housing, and said flexible element is used for extension part is assemblied on the housing to allow extension part with respect to housing generation angular displacement.
Background technique
Having the flexible joint that extension part is assemblied in the annular elastic material flexible element on the housing is used to reduce the floating offshore installations and hangs between standpipe and the mooring line on the floating offshore installations because of kinetic stress.Typically, flexible element comprises the spherical washer that replaces and the elastomeric layer of metal or other rigid material.This flexible element can provide ± 15 degree or more freedom angular displacements approximately, supports the axial tensile force that is directly proportional with the flexible element size simultaneously.Typically, the size of flexible element has been carried out selecting dealing with the expectation load on standpipe or the mooring line, and flexible element has been made and laid in to deal with various standard-sized standpipes or mooring line with various sizes.
Standpipe is used to be uploaded to the deck of floating offshore vessels with producing fluid from sea bed, and is used for the production fluid is passed to one or more output pipes from ship.By standpipe put on load on the flexible element generally include angular displacement and the rotation of tension force on the standpipe, standpipe, in the production fluid interior pressure and from the temperature of the rising of producing fluid.Therefore, produce the interior pressure in the fluid and can make that from the temperature of the rising of producing fluid to select flexible element more difficult than select flexible element for mooring line into standpipe.
For different applications, flexible pipe joint is combined with a plurality of flexible elements in common housing.For example, the both-end flexible pipe joint that is used for standpipe has at housing and is used for first extension tube is assemblied in first flexible element on the housing and is used for second extension tube is assemblied in second flexible element on the housing.These two extension tubes extend from common housing in opposite direction.In this way, this both-end flexible pipe joint can provide and double the angular displacement that single-ended flexible pipe joint with single flexible element can bear.This angular displacement is decomposed between two flexible elements of both-end flexible pipe joint, but in two flexible elements each is all carried whole tension force of identical standpipe.Be to invest on August 1st, 1972 the 3rd of people such as Herbert; 680, No. 895 U. S. Patents, invest the 4th, 068 of people such as Herbert on January 17th, 1978; No. 864 U. S. Patents (referring to Fig. 4) and invest Whightsil on July 28th, 1992; The instance of this both-end flexible pipe joint is disclosed in the 5th, 133, No. 578 U. S. Patents of people such as Sr.
Flexible pipe joint is combined with a plurality of flexible elements in common housing, make two flexible elements experience identical angular displacement, but have only a carrying to act on the tension loading on the flexible pipe joint in these two flexible elements.This structure can reduce produces fluid and acts on the pressure on each flexible element, and provide main sealing mechanism and backup seal mechanism with the production fluid containment that will pressurize in pipe joint.Yet the flexible element in these notions need be through precompression correctly to work; This has reduced the working life of flexible element.Therefore, these designs can not effectively utilize these two flexible elements to carry axial load and the sealing load that acts on the pipe.Be to invest on January 15th, 1980 the 4th, 183, No. 556 U. S. Patents of Schwemmer and invest the instance that discloses this flexible pipe joint in the 4th, 068, No. 868 U. S. Patents of Ohrt on January 17th, 1978.
The flexible pipe joint that in common housing, has a plurality of flexible elements also has been used to the two-chamber standpipe that provides coaxial.For example; Like the 4th of the people such as Peppel that authorize on November 15th, 1988; The 4th, 984 of 784, No. 410 U. S. Patents and the people such as Peppel that authorize on January 15th, 1991; No. 827 U. S. Patent is said, in flexible pipe joint, be formed with at least two with one heart and separate channels so that fluid is transmitted through this flexible pipe joint.According to thinking, these passages keep separating and in the whole range of pivotal motion of flexible pipe joint cross section keep constant basically.Yet, the 4th, 784 of people such as Peppel; No. 410 and the 4th, 984, in each in No. 827 disclosed several versions of U. S. Patent; All force flexible element and common angular displacement in the common housing to be worked concurrently through connecting ring; Thereby the cross section of guaranteeing these passages keeps constant basically in the joint rotary course, but material not connection on axial direction makes the tension loading that acts in the flexible joint only carried by a flexible element.
Summary of the invention
The present invention has found to hope in flexible joint with the stacked two or more annular elastic material flexible elements of coaxial manner; And mechanically connecting these flexible elements is assemblied on the housing with the extension part with flexible joint; Make flexible element work concurrently on respect to the angular displacement of housing and axial displacement at extension part; So that make in the flexible element each be in compressive state, thereby tension loading is decomposed in flexible element or in flexible element, born jointly with respect to the tension loading of housing on extension part.Therefore, for the given shell dimension or the area of coverage, the total capability for load of flexible joint is improved, and for given load capacity, be improved the working life of flexible joint.
Stacked flexible element needn't have identical geometrical shape or be manufactured from the same material, and stacked flexible element also needn't be by precompression so that correctly work.Usually, the total load that is applied is decomposed in the middle of stacked flexible element with the relative stiffness of stacked flexible element with being directly proportional.For example; Stacked flexible element can have identical geometrical shape and be manufactured from the same material; And can be provided with in the same manner with respect to common rotating center; So that stacked flexible element has identical relative stiffness, the total load that is therefore applied will be decomposed in the middle of stacked flexible element equably.In another example; Stacked flexible element has the different geometric shape or is processed by different materials; Perhaps be provided with in a different manner with respect to common rotating center; So that stacked flexible element has different relative stiffnesses, the total load that is applied is separated in the middle of stacked flexible element with the relative stiffness of stacked flexible element with being directly proportional unequally.
According to first aspect, the invention provides a kind of flexible joint, it comprises: frame; Extension part from the frame extension; The first annular elastic material flexible element, its extension part is assemblied on the frame in case extension part with respect to frame generation angular displacement; And at least the second annular elastic material flexible element, it is connected between extension part and the frame.First and second flexible elements are stacked and mechanically connection with coaxial manner; Make first and second flexible elements work concurrently on respect to the angular displacement of frame and axial displacement at extension part; So that make in first and second flexible elements each be in compressive state, thereby in first flexible element and second flexible element, tension loading is decomposed with the rigidity to axial of first and second flexible elements with being directly proportional and bear jointly with respect to the tension loading of frame on extension part.
According on the other hand, the invention provides a kind of flexible pipe joint, it comprises: frame, attachment flange, extension tube, the first annular elastic material flexible element, interior pipe and the second annular elastic material flexible element.Frame has first end and second end.Attachment flange is assembled on first end of frame.Extension tube extends from second end of frame.First flexible element is located in the frame, and with extension tube be assemblied on the frame in case extension tube with respect to frame generation angular displacement.Extension tube passes first flexible element, so that first flexible element surrounds extension tube.Interior pipe is located in the frame and is assemblied on the attachment flange, and provides the passage from the hole on the attachment flange to extension tube so that fluid flows through flexible pipe joint.Inner housing is arranged in the frame, and is attached on the extension tube.Second flexible element be arranged in the frame with inner housing in, and interior pipe is assemblied on the inner housing.Interior pipe passes second flexible element, so that second flexible element is managed in surrounding.First and second flexible elements are stacked and mechanically connection with coaxial mode; Make first and second flexible elements work concurrently on respect to the angular displacement of frame and axial displacement at extension part; So that make in first and second flexible elements each be in compressive state, thereby in first flexible element and second flexible element, tension loading is decomposed with the rigidity to axial of first and second flexible elements with being directly proportional and bear jointly with respect to the tension loading of frame on extension tube.
According to another aspect, the invention provides a kind of flexible pipe joint, it comprises frame, attachment flange, extension tube, the first annular elastic material flexible element and the second annular elastic material flexible element.Frame has first end and second end.Attachment flange is assembled on first end of frame.Extension tube extends from second end of frame.First flexible element is arranged in the frame, and with extension tube be assemblied on the frame in case extension tube with respect to frame generation angular displacement.Extension tube passes first flexible element, so that first flexible element surrounds extension tube.The second annular elastic material flexible element is arranged in the frame, and extension tube is assemblied on the frame.Extension tube passes second flexible element, so that second flexible element surrounds extension tube.The attachment flange limiting hole leads to the passage of extension part so that fluid flows through flexible pipe joint to be used as.First and second flexible elements are stacked and mechanically connection with coaxial manner; Make first and second flexible elements work concurrently on respect to the angular displacement of frame and axial displacement at extension part; So that make in first and second flexible elements each be in compressive state, thereby in first flexible element and second flexible element, tension loading is decomposed with the rigidity to axial of first and second flexible elements with being directly proportional and bear jointly with respect to the tension loading of frame on extension tube.
Description of drawings
Now supplementary features of the present invention and advantage will be described with reference to the drawings hereinafter, in the accompanying drawings:
Fig. 1 is the schematic representation that comprises the tension leg platform (TLP) (TLP) of production riser with chain thing structure and export riser;
Fig. 2 is used for export riser is assemblied in the side entering type fluting seat on the TLP of Fig. 1;
Fig. 3 is the front elevation that has according to the flexible pipe joint of first structure of the present invention;
Fig. 4 is the transverse cross-sectional view along the flexible pipe joint of the line 4-4 intercepting among Fig. 3;
Fig. 5 shows the replacement structure of the flexible pipe joint that is used for Fig. 4 for convenience detach;
Fig. 6 shows another replacement structure of the flexible pipe joint that is used for Fig. 4;
Fig. 7 shows another replacement structure of the flexible pipe joint that is used for Fig. 4 with wiper seal unit;
Fig. 8 shows the replacement structure of the flexible pipe joint that is used for Fig. 7;
Fig. 9 is the front elevation according to second structure of flexible pipe joint of the present invention;
Figure 10 shows along the transverse cross-sectional view of the line 10-10 intercepting among Fig. 9;
Figure 11 shows the replacement structure of the flexible pipe joint that is used for Figure 10 for convenience detach;
Figure 12 is the front elevation according to the 3rd structure of flexible pipe joint of the present invention;
Figure 13 shows along the transverse cross-sectional view of the line 13-13 intercepting among Figure 12;
Figure 14 shows the replacement structure of the flexible pipe joint that is used for Figure 13 for convenience detach;
Figure 15 shows another replacement structure of the flexible pipe joint that is used for Figure 13.
Though the present invention can have various improvement and replacement form, its specific embodiment is shown in the drawings and will describe in detail.Yet, it is to be understood that do not hope to limit the invention to shown in concrete form, and on the contrary, the present invention should cover all improvement, equivalent way and the replacement form of liking enclosed in the scope of the present invention that claim limits that drop on.
Embodiment
With reference to figure 1, show a kind of offshore drilling well and production ship that floats on the enerally designated 10 on the water surface 11.This floating ship is tension leg platform (TLP) (TLP) specifically, and this tension leg platform (TLP) (TLP) is fixed on the sea bed 12 through mooring line 13,14 and substrate 15,16.On four angles of TLP platform 10, there is one group of mooring line (invisible in Fig. 1) to overhang on corresponding to four pedestals 15,16 respectively.In addition, four lower angle of TLP platform 10 fix through corresponding laterally anchor line 17,18 respectively, and wherein anchor line is used for horizontal mobile platform and keeps out horizontal storm load.
For drilling fluid and drill string are reached the well bore 19 the sea bed 12 and when drilling well is accomplished, from well, take out hydrocarbon from TLP, the production riser of enerally designated 20 extends upward to TLP10 from well bore 19.Standpipe 20 comprises a plurality of rigidity tube couplings 21 that connect through flexible pipe joint 22.For example, be to invest Whightsil on July 28th, 1992, described suitable flexible pipe joint in the 5th, 133, No. 578 U. S. Patents of people such as Sr.
In Fig. 1, also show the export riser of enerally designated 24, its with catenary configuration from the suspention of the supporting leg of TLP10 and land on sea bed 12.Export riser 24 for example is from the TLP10 pipeline of facility (not shown) ashore, or the pipeline from TLP10 to the buoyage, is used to load Floating Production oil storage and unloading oil carrier (FPSO).Export riser 24 is that it is made up of a plurality of rigidity tube couplings 25 that are connected through elastic material flexible pipe joint 26 with the similarity of production riser 20.The flexible pipe joint 27 that is arranged in standpipe 24 tops is installed in the side entering type fluting seat 34 attached with the supporting leg of TLP10.
Fig. 2 shows side entering type fluting seat 34.Seat 34 is a weldment, and it is made up of with a plurality of plates 42,43 the load ring 41 through forging and machining.Plate 42,43 as web and flange plays the supporting leg of steady load ring 41 and bridge joint TLP and the effect of the load between the export riser.
In installation process, the rear portion of seat 34 is welded or otherwise is fixed on the supporting leg of TLP, and the top flexible pipe joint of export riser inserts load ring 41.This seat comprises front groove (its enerally designated 44) so that the easy side of export riser gets in the installation process.
Be used for standpipe and be used for having taked various sizes to be made and store the flexible joint that mooring line is assemblied on the TLP, be used to deal with various standard-sized standpipes or mooring line.Yet, following state possibly appear, that is: hope under the given shell dimension or the area of coverage (footprint), to improve the bearing capacity or the working life of flexible joint.For standpipe flexible pipe joint topmost, all the more so, because this flexible joint is contained on the floating ship with the fitting seat that matches with the specific housing area of coverage usually.
For example, at first select fitting seat and set its size, then fitting seat is welded on the floating ship to the service condition of expection.If service condition changes, then be difficult to change fitting seat, and new fitting seat expensive is installed.Loading condition maybe be because make and must on existing position, extract the production fluid of higher temperature and need to improve getting out new or darker well on the existing position, perhaps loading condition maybe because existing locational production has been ended and with the floating ship move to sea bed more the reposition of depths make flexible pipe joint must deal with more high tension and need to improve.All hoping on existing fitting seat, the new higher flexible pipe joint of ability to be installed under any situation.
According to an aspect of the present invention; For the given shell dimension or the area of coverage; The bearing capacity of flexible joint or working life through in flexible joint with stacked two or more the annular elastic material flexible elements of coaxial manner and mechanically connect the elastic material flexible element extension part of flexible joint is assemblied on the housing; Thereby flexible element is worked concurrently with respect to the angular displacement and the axial displacement of housing at extension part; Particularly, make that will be equipped with the flexible element compression with respect to housing in the tension loading on the extension part is improved to decompose tension loading in flexible element and in flexible element, to bear tension loading jointly.Therefore, under the given shell dimension or the area of coverage, the total capability for load of flexible joint is improved, and under given load capacity, be improved the working life of flexible joint.Compare with the design of existing discrete component or the design that has two independent actions or connect into the acting flexible element of series connection, have acting flexible element concurrently flexible pipe joint can harsher environment with more work under the exacting terms.
In preferable configuration, acting concurrently stacked flexible element is around common rotating center setting.For two acting concurrently stacked flexible elements, the relative both sides that this can be through placing flexible element rotating center so that rotating center between the flexible element, or through flexible element is placed the rotating center homonymy so that rotating center is not accomplished between flexible element.Be positioned under the situation of rotating center both sides at two flexible elements, two flexible elements can be connected mechanically to extension part by inner housing or through extending extension part, make it by each encirclement in two flexible elements.Therefore, for acting two stacked flexible elements concurrently, there are three kinds of common flexible joints structures.
Fig. 3 and 4 shows has the flexible pipe joint 27 that acting concurrently two stacked flexible elements 61,62 wherein are positioned at the ordinary constitution of common rotating center 63 both sides.In this particular example, flexible pipe joint 27 have following support ring 51, cylinder-shaped body 52, down flexible element 61, extension tube 54, inner housing 65, go up flexible element 62, interior pipe 64 and attachment flange 53.The upper flange 66 of extension tube 54 is welded on the inner housing 65, and interior pipe 64 is welded on the attachment flange 53.And attachment flange 53 is welded on the cylinder-shaped body 52.For example, these are soldered parts and are processed by the corrosion resistance Steel Alloy.
In use, make flexible pipe joint 27 be located in the firmly weight of supporting flexible pipe joint 27 and catching in the seat (34 among Fig. 2) of load.Attachment flange 53 bolts were connected on the flange (56 among Fig. 3) of tube coupling (28 among Fig. 3), so that sent the flexible pipe joint between tube coupling 28 and extension tube 54 with fluid.The combination of following support ring 51 and cylinder-shaped body 52 provides the frame of flexible pipe joint 27.When support acted on the tension loading on the extension tube 54 with respect to this frame, flexible pipe joint 27 allowed the angular displacement (θ) of extension tubes 54 with respect to frame generation certain limit.For example, as shown in Figure 3, when extension tube around rotating center 63 when vertically the orientation rotates to well azimuth 55 shown in the dotted line shown in the solid line, angular displacements (θ) take place in extension tube 54.
As shown in Figure 4, longitudinally central shaft 67 is coaxial stacked with upper, annular elastic material flexible element 62 for lower annular elastic material flexible element 61, and is contained in the frame that is made up of support ring 51 down and cylinder-shaped body 52.Stacked flexible element 61 and 62 has common rotating center 63 on axle 67.
In the embodiment of Fig. 4, the size of upper flex element 62, shape or composition needn't be identical with lower flex element 61.Usually; When tension force act on cause on the extension tube 54 extension tube with respect to cylinder-shaped body 52 when axis 67 moves; Upper flex element 62 experiences identical axial displacement respectively with lower flex element 61, thereby receives the compressive force that is directly proportional with the rigidity to axial of flexible element.Therefore, the tension loading in the flexible joint 27 is decomposed with the rigidity to axial of upper and lower flexible element 62,61 with being directly proportional and is born jointly in these flexible elements.Therefore, through being combined in upper flex element 62 in the flexible pipe joint 27 and making upper flex element be connected mechanically to lower flex element 61 and extension tube 54, this flexible pipe joint can be dealt with the load of Duoing than any single flexible element.For example, through essentially identical top, lower flex element 62,61 being combined in the flexible pipe joint 27 and mode through this embodiment mechanically connects it, the load capacity of flexible pipe joint can be the twice of single lower flex element.
According to similar fashion; Extension tube 54 makes upper flex element 62 receive identical shearing strain with lower flex element 61 through the angular displacement that takes place around common rotating center 63 rotations; Therefore flexible pipe joint 27 is provided at the reaction force on the extension tube 54, and this reaction force is the active force sum that upper and lower flexible element 62 and 61 provides; If two flexible elements 61,62 are basic identical, this reaction force can be the twice of the active force that provided by arbitrary flexible element.
Usually, because extension tube 54 connects together with inner housing 65, upper flex element 62 is compelled to work concurrently with lower flex element 61, thereby has identical moving and rotating amount.In upper flex element 62 and the lower flex element 61 shared same rotations 63, to allow extension tube 54 the free angular displacement of certain limit takes place in use.Therefore, (cause) that total load is allocated between this two flexible element with the relative stiffness of upper and lower flexible element 62,61 with being directly proportional by standpipe tension force and rotation, hydrodynamic pressure and thermal expansion.Lower flex element 61 is directly imported its load into support ring 51 down, pipe 64 in upper flex element 62 is imported its load into simultaneously.Interior pipe 64 imports load into attachment flange 53 through being welded to connect then.Attachment flange 53 is welded to connect through another load is reached down support ring 51 downwards.
In use, when producing fluid when the floating ship reaches export riser (24 Fig. 1), produce fluid flow into through the hole on the attachment flange 53 68 downwards in pipe 64, and inner cavity filled 68.Then, produce fluid and be downward through extension tube 54 from interior pipe 64.
Can also flexible pipe joint shown in Figure 4 be used in the production riser (20 among Fig. 1).In this case, will upwards flow through extension tube 54 from the production fluid of well bore, then upwards through interior pipe 64, and upwards through attachment flange 53.
The structure of flexible pipe joint 27 requires molded two assemblies separately.In a molding process, utilize two-piece type trip ring (not shown) that the elastic material of lower flex element 61 is bonded in down on support ring 51 and the extension tube 54.When this molding process is accomplished, two parts of trip ring are separated from each other to take off trip ring from molded assembly.Be to invest on November 24th, 1987 with respect to the more details of mould in Fig. 5 and the 47th row-Di 6 hurdles, the 5th hurdle the 2nd row of the 4th, 708, No. 758 U. S. Patents of McGregor and provide with this trip ring.
According to similar fashion, when molded upper flex element 62, in the elastic material of upper flex element is bonded on pipe 64 and the inner housing 65.Yet need not trip ring this moment, because the shape of interior pipe 64 and inner housing 65 allows in molding process, to use solid tapered collar.
Place through assembly on the assembly of lower flex element 61 and to be welded on the upper flange 66 of extension tube 54, produce flexible pipe joint shown in Figure 4 with the assembly of lower flex element 61 and the assembly of upper flex element 62 with inner housing 65 with upper flex element 62.Do not have cylinder body 52 this moment, therefore this welding is not hindered by cylinder-shaped body 52.Then, cylinder-shaped body 52 is placed on down on the support ring 51, and it is welded on down on the support ring.Then, attachment flange 53 is contained on the interior pipe 64, interior pipe is welded on the attachment flange, and attachment flange is welded on the cylinder body 52.
Fig. 5 shows the replacement structure that is used for flexible pipe joint for convenience detach 100.In this example, possibly dismantle to change inner corrugated pipe 110.Bellows 110 provides the non-dispersive obstacle between the elastic material of production fluid that was sent flexible pipe joint 100 and upper flex element 107.
In the process of structure flexible pipe joint 100, when bottom flexible element 103 was molded, it was bonded in down on support ring 101 and the extension tube 104.When upper flex element 107 was molded, it was bonded on inner housing 106 and the interior pipe 109.Then bellows 110 is attached on inner housing 106 and the interior pipe 109.Then, the incompressible fluid of in the cavity 111 between bellows 110 and upper flex element 107, packing into is such as propylene glycol or ployalkylene glycol.
Assembly with upper flex element 107 is placed on the assembly of lower flex element 103 then, and the upper flange 105 of extension tube 104 is fixed on the inner housing 106 through a series of bolts 112.The upper flange 105 of end ring metal washer 113 sealing extension tubes 104 and the connection between the inner housing 106.Then cylinder-shaped body 102 is placed on down on the support ring 101, and is fixed in down on the support ring 101 through a series of bolts 114.On the pipe 109, interior pipe 109 is welded on the attachment flange 108 in then attachment flange 108 being contained in.Through a series of bolts 115 attachment flange 108 is fixed on the cylinder-shaped body 102 then.
For dismantling, demounting bolt 115 makes attachment flange 108 no longer be fixed on the cylinder-shaped body 102.Then the welding between interior pipe 109 and the attachment flange 108 is ground off, make it possible to attachment flange is taken off from interior pipe.Then bolt 114 is removed, so that can cylinder-shaped body 102 be taken off from following support ring 101.Then bolt 112 is removed, so that can the assembly of upper flex element 107 assembly from lower flex element 103 be taken off.
Fig. 6 shows the replacement structure of flexible pipe joint 120.In this example, flexible pipe joint 120 comprises support ring 121, cylinder-shaped body 122, lower flex element 123, extension tube 124, inner housing 126, upper flex element 127, interior pipe 129 and attachment flange 128 down.The upper flange 125 of extension tube 124 is welded on the inner housing 126, and interior pipe 129 is welded on the attachment flange 128.Cylinder-shaped body 122 bolts are connected down on the support ring 121, and attachment flange 128 bolts are connected on the cylinder-shaped body.
Through unclamping attachment flange 128 from cylinder-shaped body 122, grind off welding between attachment flange and the interior pipe 129, taking off attachment flange 128 and unclamp and take off cylinder-shaped body 122 from support ring 121 down, the structure of flexible pipe joint 120 makes the part dismounting become easy.This part is dismantled and possibly is supposed to be used to check upper flex element 127 and lower flex element 123, and contact is embedded in the sensor in the flexible element.For example, be to invest on May 18th, 1999 in the 5th, 905, No. 212 U. S. Patents of people such as Moses and described the sensor that is embedded in the flexible element.
Fig. 7 shows flexible pipe joint 130, and flexible pipe joint 130 also comprises upper inner liner 141, lower inner liner 142 and centering ring 143.The secondary annular elastic material flexible element 144 on top centers between positioning ring 143 and the upper inner liner 141, and the secondary annular elastic material flexible element 145 of bottom centers between positioning ring and the lower inner liner 142.The assembly of the secondary annular elastic material flexible element 144 on upper inner liner 141, lower inner liner 142, centering ring 143, top and the secondary annular elastic material flexible element 145 of bottom is molded into individual unit together.
In the assembling process of flexible pipe joint 130, the main flexible element 133 of bottom is molded, and is bonded in down on support ring 131 and the extension tube 134.The main flexible element 137 on top is molded, and is bonded on inner housing 136 and the interior pipe 139.Then; The lower inner liner 142 of spacer assembly is inserted extension tube 134; The assembly of the main flexible element 137 on top is reduced to correct position; So that interior pipe 139 is placed on the upper liner 141 of spacer assembly,, be located in until inner housing 136 on the upper flange 135 of extension tube 134 so that upper liner 141 is inserted interior pipe 139.Then inner housing 136 is welded on the upper flange 135 of extension tube 134.Lower end with lower inner liner 142 is welded on the lower end of extension tube 134 then, in the upper end of upper inner liner 141 is welded on the upper end of pipe 139.Then, cylinder-shaped body 132 is placed in and is welded on down on the support ring 131.Then, manage on 139 in attachment flange 138 is installed in, and be placed on the cylinder-shaped body 132, the upper end of interior pipe is welded on the attachment flange.Then attachment flange 138 is welded on the cylinder-shaped body 132.
In all flexible element 133,137,144,145 shared same rotations of flexible pipe joint 130 146, to allow extension tube 134 the free angular displacement of certain limit takes place in operating process.Secondary flexible element 144,145, centering ring 143, upper liner 141 and lower pad 142 are with inner chamber 147 and production fluid isolation.This has eliminated final pressure head then, and the pressure that allows else if to produce fluid gets into inner chamber 147 and acts on main flexible element 137 and 133, and then this pressure head can be introduced into.Therefore, the assembly of liner 141,142 and centering ring 143 and secondary flexible element 144,145 serves as the pressure isolation unit, and it forms redundant in the sealing between the external environment condition of producing fluid and flexible pipe joint 130.
Fig. 8 shows flexible pipe joint 150, the structure of flexible pipe joint 150 and shown in Figure 7 similar, but be configured to convenient part dismounting.Flexible pipe joint 150 comprises support ring 151 down; Cylinder-shaped body 152; The main flexible element 153 of bottom; Extension tube 154; Inner housing 156; The main flexible element 157 on top; Attachment flange 158; Interior pipe 159; Upper inner liner 161; Lower inner liner 162; Centering ring 163; Be adhered to the secondary flexible element 164 on the top between upper substrate 161 and the centering ring 163; And the secondary flexible element 165 that is adhered to the bottom between lower substrate 162 and the centering ring 163.
Be convenient part dismounting, cylinder-shaped body 152 is anchored on down on the support ring 151 by a series of bolts 168, and attachment flange 158 is anchored on the cylinder-shaped body by a series of bolts 169.
Fig. 9 shows the flexible pipe joint 170 that has according to second structure of the present invention.In this example, sub-body 171 and upper body 172 provide the frame of flexible pipe joint 170.Intermediate host supporting element 173 is located between sub-body 171 and the upper body 172.Extension tube 174 extends from sub-body 171, and attachment flange 175 is assembled on the upper body 172.These parts are for example processed by erosion-resisting Steel Alloy.
Figure 10 shows the transverse cross-sectional view of flexible pipe joint 170.In this example, intermediate host supporting element 173 is welded on the sub-body 171, and upper body 172 is welded on the intermediate host supporting element 173, and attachment flange 175 is welded on the upper body 172.Lower annular elastic material flexible element 176 is bonded on the sub-body 171, and is bonded on the extension tube 174 so that extension tube 174 is assemblied on the sub-body 171.Upper, annular elastic material flexible element 177 is bonded on the intermediate host supporting element 173, and is bonded on the upper flex element lid 178.For example, upper flex element lid 178 is processed by erosion-resisting Steel Alloy.Upper flex element lid 178 is welded on the upper flange 179 of extension tube 174.In lower flex element 176 and the rotation of upper flex element 177 share common 181, carry out free angular displacement around this common rotating center to allow extension tube 174.
In this second structure, lower flex element 176 is arranged on each opposite side of common rotation 181 with upper flex element 177, and lower flex element and upper flex element are all surrounded extension tube 174.Because extension tube 174 connects together with upper flex element lid 178, lower flex element 176 and upper flex element 177 are compelled to have identical displacement and rotating amount.Therefore, (cause) that the total load on the flexible pipe joint 170 is distributed between this two flexible element with the relative stiffness of upper and lower flexible element 176,177 with being directly proportional by standpipe tension force and rotation, hydrodynamic pressure and thermal expansion.Lower flex element 176 is directly imported its load into sub-body 171, and upper flex element 177 is imported its load into sub-body 171 through intermediate host supporting element 173 simultaneously.
In use, when producing fluid through flexible pipe joint 170 when the floating ship reaches the export riser that comprises extension tube 174, produce fluid and be downward through attachment flange 175, and fill top inner chamber 182.Produce fluid and flow into upper flex element lid 178, be downward through extension tube 174 then.
Can also flexible pipe joint 170 be used in the production riser that comprises extension tube 174.In this case, will upwards flow through extension tube 174, and upwards flow through upper flex element then and extend and cover 178, and upwards pass through attachment flange 175 from the production fluid of well bore.
In the manufacture process of flexible pipe joint 170, when bottom flexible element 176 was molded, the elastic material of lower flex element was bonded on sub-body 171 and the extension tube 174.The common two-part moudle that is clipped between extension tube 174 and the sub-body 171 provides toroidal cavity, is used for holding elastic material and reinforcer in the process of molded lower flex element 176.When upper flex element 177 was molded, the elastic material of upper flex element was bonded in intermediate host supporting element 173 and covers on 178 with upper flex element.In this case; The sacrificial (sacrificial) or the foldable two-part moudle that are clipped between upper flex element lid 178 and the intermediate host supporting element 173 provide toroidal cavity, are used for holding elastic material and reinforcer in the process of molded upper flex element 177.Then, the assembly that (covers with intermediate host supporting element 173 and upper flex element) upper flex element 177 178 bonding is installed on the assembly of (bonding with sub-body 171 and extension tube 174) lower flex element 176.Then, upper flex element lid 178 is welded on the upper flange 179 of extension tube 174, and intermediate host supporting element 173 is welded on the sub-body 171.Then, upper body 172 is welded on the intermediate host supporting element 173, and attachment flange 175 is welded on the upper body 172.
Figure 11 show have as introduce among Figure 10 second the structure but be configured to flexible pipe joint for convenience detach 190.Flexible pipe joint 190 has sub-body 191, upper body 192, intermediate host supporting element 193, extension tube 194 and attachment flange 195.Lower annular elastic material flexible element 196 is bonded on sub-body 191 and the extension tube 194, and upper, annular elastic material flexible element 197 is bonded in intermediate host supporting element 193 and covers on 198 with upper flex element.
The dismounting of flexible pipe joint 190 can be used to change inner corrugated pipe 201.Bellows 201 provides the non-dispersive obstacle between the elastic material of production fluid that was sent flexible pipe joint 190 and upper flex element 197.
For for convenience detach; As the replacement that metal parts is welded together; A series of bolts 203 are fastened on upper flex element lid 198 on the upper flange 199 of extension tube 194, and a series of bolts 204 are fastened on attachment flange 195, upper body 192 and intermediate host supporting element 193 on the sub-body 191.Connection between the upper flange 199 of end ring metal washer 205 sealing upper flex element lids 198 and extension tube 194.Connection between end ring metal washer 206 sealed attachment flanges 195 and the upper body 192.Connection between end ring metal washer 207 sealing upper body 192 and the intermediate host supporting element 193.Connection between end ring metal washer 208 sealing intermediate host supporting elements 193 and the sub-body 191.
In the manufacture process of flexible pipe joint 190, lower flex element 196 is molded, and is bonded on sub-body 191 and the extension tube 194.Upper flex element 197 is molded, and is bonded on intermediate host supporting element 193 and the upper flex element supporting cover 198.Then bellows 201 being attached in intermediate host supporting element 193 covers on 198 with upper flex element.Cavity between bellows 201 and upper flex element 197 202 loads incompressible fluids then, such as propylene glycol or ployalkylene glycol.Then end ring metal washer 205 is placed on the upper flange 199 of extension tube 194; End ring metal washer 208 is placed on the sub-body 191; And the assembly of upper flex element 197 is installed on the upper flange 199 of extension tube 194, and is fixed on the correct position through bolt 203.Then end ring metal washer 207 is placed on the intermediate host supporting element 193, and upper body 192 is placed on the intermediate host supporting element.Then end ring metal washer 206 is placed on the upper body 192, attachment flange 195 is placed on the upper body 192, and be fixed on the correct position through bolt 204.
Figure 12 shows flexible pipe joint 210, and it has according to the 3rd structure of the present invention.Flexible pipe joint 210 has frame 211, extension tube 212 and attachment flange 213.For flexible pipe joint 210 is connected on the supplying tube 214, the flange 215 of supplying tube by bolt tightly on attachment flange 213.For flexible pipe joint 210 is connected on the standpipe 216, extension tube 212 is welded on the standpipe.For example, these parts are processed by erosion-resisting Steel Alloy.
Figure 13 shows the transverse cross-sectional view of flexible pipe joint 210.In this example, attachment flange 213 is welded on the frame 211.Lower annular elastic material flexible element 221 is bonded on frame 211 and the extension part sheath 222.Upper, annular elastic material flexible element 223 is bonded on the inner housing 224 on the upper flange 225 with extension tube 212.For example, inner housing 224 is processed by erosion-resisting Steel Alloy with extension part sheath 222.Inner housing 224 is welded on the attachment flange 213, and extension part sheath 222 is welded on the extension tube 212.Lower flex element 221 and upper flex element 223 share common rotating centers 226 are to allow extension tube 212 through the free angular displacement of certain limit takes place around the common rotating center rotation of flexible element.
In the 3rd structure, lower flex element 221 and upper flex element 223 are positioned at the homonymy of common rotating center 226, and lower flex element and upper flex element are surrounded extension tube 212.For using similar flexible element in this case; More the upper flex element 223 near common rotating center 226 is nested in the lower flex element 221, makes the part of upper flex element 223 between the part of common rotating center 226 and lower flex element 221.Because extension tube 212 connects together with extension part sheath 222, lower flex element 221 and upper flex element 223 are compelled to have identical displacement and rotating amount.Therefore, (cause) that the total load on the flexible pipe joint 210 is allocated between this two flexible element with the relative stiffness of upper and lower flexible element 221,223 with being directly proportional by standpipe tension force and rotation, hydrodynamic pressure and thermal expansion.Lower flex element 221 is directly imported its load into frame 211, and upper flex element 223 is imported its load into attachment flange 213 through inner housing 224 simultaneously, and reaches frame downwards from attachment flange.
In use,, produce fluid and be downward through attachment flange 213, be downward through extension tube 212, arrive standpipe 216 from supplying tube 214 when producing fluid through flexible pipe joint 210 when the floating ship reaches export riser.
Can also flexible pipe joint 210 be used in the production riser.In this case, will upwards flow through standpipe 216, upwards flow through extension tube 212, then upwards through attachment flange 213 from the production fluid of well bore.
In the manufacture process of flexible pipe joint 210, when bottom flexible element 221 was molded, the elastic material of lower flex element was bonded on frame 211 and the extension part sheath 222.The common two-part moudle that is clipped between frame 211 and the extension part sheath 222 provides toroidal cavity, is used for holding elastic material and reinforcer in the process of molded lower flex element 221.When upper flex element 223 was molded, the elastic material of upper flex element was bonded on the upper flange 225 of inner housing 224 and extension tube 212.The common two-part moudle that is clipped between inner housing 224 and the upper flange 225 provides toroidal cavity, is used for holding elastic material and reinforcer in the process of molded upper flex element 223.Then attachment flange 213 is installed and is welded on the inner housing 224.Assembly with attachment flange 213, inner housing 224, upper flex element 223 and extension tube 212 is installed on the assembly of extension part sheath 222, lower flex element 221 and frame 211 then.Lower end with extension part sheath 222 is welded on the extension tube 212 then, and attachment flange 213 is welded on the frame 211.
Figure 14 show have as introduce among Figure 13 second the structure but be configured to flexible pipe joint for convenience detach 230.Flexible pipe joint 230 has frame 231, extension tube 232 and attachment flange 233.Lower annular elastic material flexible element 241 is bonded on frame 231 and the extension part sheath 242.Upper, annular elastic material flexible element 243 is bonded on the upper flange 235 of inner housing 244 and extension tube 232.
The dismounting of flexible pipe joint 230 can be used to change inner corrugated pipe 251.Bellows 251 provides the non-dispersive obstacle between the elastic material of production fluid that was sent flexible pipe joint 230 and upper flex element 243.
For for convenience detach, as with the substitute mode a plurality of welded together in the metal parts, a series of bolts 252 are fastened on attachment flange 233 on the inner housing 244, and a series of bolts 253 are fastened on attachment flange 233 on the frame 231.Connection between end ring metal washer 254 sealed attachment flanges 233 and the inner housing 244.Connection between end ring metal washer 255 sealed attachment flanges 233 and the frame 231.In addition, through with lower protruding edge 237 bolts of extension tube 232 tightly on the upper flange 238 of standpipe 236, flexible joint 230 is attached on the standpipe 236.
In the manufacture process of flexible pipe joint 230, lower flex element 241 is molded, and the elastic material of lower flex element is bonded on frame 231 and the extension part sheath 242.Upper flex element 243 is molded, and the elastic material of upper flex element is bonded on the upper flange 235 of inner housing 244 and extension tube 232.Then bellows 251 is attached on the upper flange 235 of inner housing 244 and extension tube 232.Then to the 256 filling incompressible fluids of the cavity between bellows 251 and upper flex element 243, such as propylene glycol or ployalkylene glycol.Assembly with upper flex element 243 and extension tube 232 is installed on the assembly of extension part sheath 242, lower flex element 241 and frame 231 then.Lower end with extension part sheath 242 is welded on the extension tube 232 then.Then attachment flange 233 is placed on inner housing 244 and the frame 231, and is fixed on the correct position through bolt 252 and 253.
Figure 15 shows another kind of flexible pipe joint 260.Flexible pipe joint 260 has frame 261, extension tube 262 and attachment flange 263.For flexible pipe joint 260 is connected on the supplying tube 264, the flange 265 of supplying tube by bolt tightly on attachment flange 263.For flexible pipe joint 260 is connected on the standpipe 266, extension tube 262 is welded on the standpipe.Lower annular elastic material flexible element 271 is bonded on frame 261 and the extension part sheath 272.Upper, annular elastic material flexible element 273 is bonded on the upper flange 275 of inner housing 274 and extension tube 262.Inner housing 274 is welded on the attachment flange 263, and the lower end of extension part sheath 272 is welded on the extension tube 262.
Except attachment flange 263 is that bolt connects but not being welded on the frame 261, the structure of the flexible pipe joint 260 among Figure 15 is similar with the flexible pipe joint 210 among Figure 13.Although in operating process, do not need, the connection between end ring metal washer 276 sealed attachment flanges 263 and the frame 261, and a series of bolt 277 is fixed on attachment flange on the frame.
Though various embodiment of the present invention has been described as the flexible pipe joint as standpipe hereinbefore, it is to be understood that these embodiments also can be used as the flexible joint of mooring line.In this case, mooring line will be soldered or otherwise be fixed on the extension tube.Typically, not need through flexible joint to or transmit fluid from mooring line, so the hole on the attachment flange can cover with plate, cover plate perhaps not with holes or lid can substitute on the frame that attachment flange is assembled in flexible joint.
Consider foregoing, described a kind of flexible joint with extension part, said extension part be assembled on the housing in case extension part with respect to the housing angular displacement.Two or more annular elastic material flexible elements are stacked with coaxial manner; And mechanically connected so that extension part is assemblied on the housing; Make flexible element work concurrently with respect to the angular displacement and the axial displacement of housing at extension part; So that particularly, thus the tension loading on extension part makes each flexible element be in compressive state decomposes tension loading and bear jointly in these flexible elements with being directly proportional with the rigidity to axial of flexible element.Therefore, for the given shell dimension or the area of coverage, total capability for load is improved, and for given load capacity, be improved the working life of flexible joint.Flexible element can be of different sizes or component, and can have common rotating center; And flexible element can be arranged on the homonymy or the both sides of rotating center.
Claims (20)
1. flexible joint comprises:
Frame;
Extension part from the frame extension;
The first annular elastic material flexible element, its extension part is assemblied on the frame in case extension part with respect to frame generation angular displacement; And
At least one second annular elastic material flexible element, it is connected between extension part and the frame;
Wherein, The first annular elastic material flexible element and the second annular elastic material flexible element are stacked and mechanically be connected with coaxial mode; Win annular elastic material flexible element and the second annular elastic material flexible element are worked on respect to the angular displacement of frame and axial displacement at extension part concurrently; So that make in the first annular elastic material flexible element and the second annular elastic material flexible element each be in compressive state, thereby in the first annular elastic material flexible element and the second annular elastic material flexible element, tension loading is decomposed pro rata with the rigidity to axial of the first annular elastic material flexible element and the second annular elastic material flexible element and bear jointly with respect to the tension loading of frame on extension part.
2. flexible joint as claimed in claim 1, wherein:
Extension part is a pipe; Frame has first end and second end; Extension part extends from second end of frame; Flexible joint also comprises the attachment flange on first end that is assemblied in frame, and this attachment flange limits the hole of also passing through the passage of the first annular elastic material flexible element and the second annular elastic material flexible element through frame, so that fluid flow to or leave extension part.
3. flexible joint as claimed in claim 1, wherein:
The first annular elastic material flexible element and the second annular elastic material flexible element are basic identical; Make the rigidity to axial of the annular elastic material flexible element of winning equal the rigidity to axial of the second annular elastic material flexible element basically, and in the first annular elastic material flexible element and the second annular elastic material flexible element each is all carried with respect to about 1/2 of the tension loading of frame on extension part.
4. flexible joint as claimed in claim 1, wherein:
The first annular elastic material flexible element and the second annular elastic material flexible element have common rotating center.
5. flexible joint as claimed in claim 4, wherein:
Common rotating center is between the first annular elastic material flexible element and the second annular elastic material flexible element.
6. flexible joint as claimed in claim 5, wherein:
The second annular elastic material flexible element passes in the mechanical connection portion of the second annular elastic material flexible element and frame, makes this mechanical connection portion surrounded by the second annular elastic material flexible element.
7. flexible joint as claimed in claim 5, wherein:
Extension part passes the second annular elastic material flexible element to be connected with the second annular elastic material flexible element, makes this extension part surrounded by the second annular elastic material flexible element.
8. flexible joint as claimed in claim 4, wherein:
At least a portion of the second annular elastic material flexible element is between at least a portion of the common rotating center and the first annular elastic material flexible element.
9. flexible joint as claimed in claim 1, wherein:
Extension part and frame are made of metal; The elastic material of the first annular elastic material flexible element is bonded on extension part and the one section frame; The elastic material of the second annular elastic material flexible element is bonded on first metal segments and second metal segments; And first metal segments is attached on the extension part, and second metal segments is attached on the frame.
10. flexible joint as claimed in claim 9, wherein:
First metal segments is welded on the extension part, and welding of second metal segments or bolt are connected on the frame.
11. flexible joint as claimed in claim 9, wherein:
First metal segments is an inner housing, and the second annular elastic material flexible element is arranged in the inner housing, and second metal segments passes the second annular elastic material flexible element, makes second metal segments surrounded by the second annular elastic material flexible element.
12. flexible joint as claimed in claim 9, wherein:
Extension part passes the first annular elastic material flexible element and the second annular elastic material flexible element; Make the annular elastic material flexible element of winning surround extension part; And the second annular elastic material flexible element surrounds extension part; Extension part has the flange attached with first metal segments, and second metal segments is arranged between two sections framies.
13. flexible joint as claimed in claim 1, wherein:
Extension part passes the first annular elastic material flexible element and the second annular elastic material flexible element; Make the annular elastic material flexible element of winning surround extension part; And the second annular elastic material flexible element surrounds extension part; Extension part and frame are made of metal, and the elastic material of the first annular elastic material flexible element is bonded on the extension part and first metal segments, and the elastic material of the second annular elastic material flexible element is bonded on second metal segments and the one section frame; And first metal segments is attached on the frame, and second metal segments is attached on the extension part.
14. flexible joint as claimed in claim 13, wherein:
Second metal segments is welded on the extension part.
15. a flexible pipe joint comprises:
Frame, it has first end and second end;
Attachment flange, it is assemblied on first end of frame;
Extension tube, its second end from frame extends;
The first annular elastic material flexible element; It is arranged in the frame; And with extension tube be assemblied on the frame in case extension tube with respect to frame generation angular displacement, extension tube passes the first annular elastic material flexible element so that the first annular elastic material flexible element surrounds extension tube;
In pipe, it is located in the frame and is assemblied on the attachment flange, and provide hole from attachment flange to the passage of extension tube so that fluid flows through flexible pipe joint;
Inner housing, it is located in the frame and is attached on the extension tube; And
The second annular elastic material flexible element, its be located in the frame with inner housing in, and interior pipe is assemblied on the inner housing, interior pipe pass the second annular elastic material flexible element so that the second annular elastic material flexible element surround in pipe;
Wherein, The first annular elastic material flexible element and the second annular elastic material flexible element are stacked and mechanically be connected with coaxial mode; Win annular elastic material flexible element and the second annular elastic material flexible element are worked on respect to the angular displacement of frame and axial displacement at extension part concurrently; So that make in the first annular elastic material flexible element and the second annular elastic material flexible element each be in compressive state, thereby in the first annular elastic material flexible element and the second annular elastic material flexible element, tension loading is decomposed pro rata with the rigidity to axial of the first annular elastic material flexible element and the second annular elastic material flexible element and bear jointly with respect to the tension loading of frame on extension tube.
16. flexible pipe joint as claimed in claim 15, wherein:
The elastic material of the first annular elastic material flexible element is bonded on extension tube and the one section frame, in the elastic material of the second annular elastic material flexible element is bonded on pipe and the inner housing.
17. a flexible pipe joint, it comprises:
Frame, it has first end and second end;
Attachment flange, it is assemblied on first end of frame;
Extension tube, its second end from frame extends;
The first annular elastic material flexible element; It is arranged in the frame; And with extension tube be assemblied on the frame in case extension tube with respect to frame generation angular displacement, extension tube passes the first annular elastic material flexible element so that the first annular elastic material flexible element surrounds extension tube;
The second annular elastic material flexible element, it is located in the frame, and extension tube is assemblied on the frame, and extension tube passes the second annular elastic material flexible element so that the second annular elastic material flexible element surrounds extension tube;
Wherein, attachment flange limits the hole of the passage that leads to extension tube, so that fluid flows through flexible pipe joint; And
The first annular elastic material flexible element and the second annular elastic material flexible element are stacked and mechanically be connected with coaxial mode; Win annular elastic material flexible element and the second annular elastic material flexible element are worked on respect to the angular displacement of frame and axial displacement at extension tube concurrently; So that make in the first annular elastic material flexible element and the second annular elastic material flexible element each be in compressive state, thereby in the first annular elastic material flexible element and the second annular elastic material flexible element, tension loading is decomposed pro rata with the rigidity to axial of the first annular elastic material flexible element and the second annular elastic material flexible element and bear jointly with respect to the tension loading of frame on extension tube.
18. flexible pipe joint as claimed in claim 17, wherein:
The elastic material of the first annular elastic material flexible element is bonded on extension tube and the one section frame; The elastic material of the second annular elastic material flexible element is bonded on lid and the intermediate host supporting element; Said lid is attached on the extension tube, and said intermediate host supporting element is set between each section of frame.
19. flexible pipe joint as claimed in claim 17, wherein:
The elastic material of the first annular elastic material flexible element is bonded in extension tube and is adhered on the inner housing on the attachment flange; The first annular elastic material flexible element is arranged in the inner housing; The elastic material of the second annular elastic material flexible element is bonded on one section frame and the extension part sheath; The extension part sheath passes the second annular elastic material flexible element so that the second annular elastic material flexible element surrounds the extension part sheath, and the extension part sheath is attached on the extension tube.
20. flexible pipe joint as claimed in claim 19, wherein:
The extension part sheath is welded on the extension tube.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/036,738 | 2008-02-25 | ||
| US12/036,738 US8016324B2 (en) | 2008-02-25 | 2008-02-25 | Two-element tandem flexible joint |
| PCT/US2009/035025 WO2009108642A1 (en) | 2008-02-25 | 2009-02-24 | Two-element tandem flexible joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101874175A CN101874175A (en) | 2010-10-27 |
| CN101874175B true CN101874175B (en) | 2012-11-21 |
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ID=40908806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801011087A Active CN101874175B (en) | 2008-02-25 | 2009-02-24 | Two-element tandem flexible joint |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US8016324B2 (en) |
| EP (1) | EP2250419B1 (en) |
| CN (1) | CN101874175B (en) |
| AU (1) | AU2009219442B2 (en) |
| BR (1) | BRPI0905087B1 (en) |
| ES (1) | ES2413257T3 (en) |
| MY (1) | MY151960A (en) |
| RU (1) | RU2479782C2 (en) |
| WO (1) | WO2009108642A1 (en) |
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-
2008
- 2008-02-25 US US12/036,738 patent/US8016324B2/en active Active
-
2009
- 2009-02-24 ES ES09715440T patent/ES2413257T3/en active Active
- 2009-02-24 EP EP09715440.5A patent/EP2250419B1/en active Active
- 2009-02-24 MY MYPI20103844 patent/MY151960A/en unknown
- 2009-02-24 WO PCT/US2009/035025 patent/WO2009108642A1/en active Application Filing
- 2009-02-24 AU AU2009219442A patent/AU2009219442B2/en active Active
- 2009-02-24 CN CN2009801011087A patent/CN101874175B/en active Active
- 2009-02-24 RU RU2010134827/06A patent/RU2479782C2/en active
- 2009-02-24 BR BRPI0905087-6A patent/BRPI0905087B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| MY151960A (en) | 2014-07-31 |
| BRPI0905087B1 (en) | 2019-08-20 |
| EP2250419B1 (en) | 2013-04-10 |
| RU2010134827A (en) | 2012-04-10 |
| US20090212557A1 (en) | 2009-08-27 |
| AU2009219442B2 (en) | 2012-07-05 |
| RU2479782C2 (en) | 2013-04-20 |
| AU2009219442A1 (en) | 2009-09-03 |
| BRPI0905087A2 (en) | 2015-06-30 |
| CN101874175A (en) | 2010-10-27 |
| ES2413257T3 (en) | 2013-07-16 |
| EP2250419A1 (en) | 2010-11-17 |
| US8016324B2 (en) | 2011-09-13 |
| WO2009108642A1 (en) | 2009-09-03 |
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